disp: msm: sde: add vbif axi port halt request support

Add vbif axi port halt request support before
MDSS core GDSC power collapse state. It is needed
for targets without MDSS RSC support.

Change-Id: I1fbf281c4206ecd4ad1c2d1348a95e002740e2f1
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>

msm/sde/sde_hw_vbif.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _SDE_HW_VBIF_H
@@ -38,23 +38,35 @@ struct sde_hw_vbif_ops {
 			u32 xin_id, bool rd);
 
 	/**
-	 * set_halt_ctrl - set halt control
+	 * set_xin_halt - set xin client halt control
 	 * @vbif: vbif context driver
 	 * @xin_id: client interface identifier
 	 * @enable: halt control enable
 	 */
-	void (*set_halt_ctrl)(struct sde_hw_vbif *vbif,
+	void (*set_xin_halt)(struct sde_hw_vbif *vbif,
 			u32 xin_id, bool enable);
 
 	/**
-	 * get_halt_ctrl - get halt control
+	 * get_xin_halt_status - get xin client halt control
 	 * @vbif: vbif context driver
 	 * @xin_id: client interface identifier
 	 * @return: halt control enable
 	 */
-	bool (*get_halt_ctrl)(struct sde_hw_vbif *vbif,
+	bool (*get_xin_halt_status)(struct sde_hw_vbif *vbif,
 			u32 xin_id);
 
+	/**
+	 * set_axi_halt - set axi port halt control
+	 * @vbif: vbif context driver
+	 */
+	void (*set_axi_halt)(struct sde_hw_vbif *vbif);
+
+	/**
+	 * get_axi_halt_status - get axi port halt control status
+	 * @vbif: vbif context driver
+	 */
+	int (*get_axi_halt_status)(struct sde_hw_vbif *vbif);
+
 	/**
 	 * set_qos_remap - set QoS priority remap
 	 * @vbif: vbif context driver